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    Subject[PATCH 0/3] Introduce atomic MMIO register clear-set
    Following a suggestion from Sebastian Hesselbarth and Russell King
    here's some work to introduce a generic thread-safe clear-set register

    The original motivation for this comes from the need to access the same
    register from a clocksource driver and a watchdog driver as we find
    in Kirkwood, Armada 370/XP SoCs.

    Since this sort of design is expected to appear in other platforms,
    instead of exporting platform-specific {mvebu,orion}_clear_set() functions
    for the thread-safe access, this patchset implements a system-wide API.

    Although this is placed in arm/kernel/io.c, there's nothing
    ARM-specific in the API and should probably me moved somewhere else.

    Suggestions on where to put it are appreciated.

    Using this API it's possible -for instance- to add support for Armada 370/XP
    in the orion_wdt driver. That work is ready, and it's been hold until we
    decide a proper solution for shared-register access.

    Based in v3.11-rc4.

    Ezequiel Garcia (3):
    ARM: Introduce atomic MMIO clear/set
    clocksource: orion: Use atomic access for shared registers
    watchdog: orion: Use atomic access for shared registers

    arch/arm/include/asm/io.h | 5 +++++
    arch/arm/kernel/io.c | 24 ++++++++++++++++++++++++
    drivers/clocksource/time-orion.c | 9 ++-------
    drivers/watchdog/orion_wdt.c | 8 ++------
    4 files changed, 33 insertions(+), 13 deletions(-)


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